.gutter {
    background-color: #f5f5f5;
    background-repeat: no-repeat;
    background-position: 50%;
}

.gutter.gutter-vertical {
    background-image:  url('');
    cursor: ns-resize;
}

.gutter.gutter-horizontal {
    background-image:  url('');
    cursor: ew-resize;
}
